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Filtering by: Subject Electric rheostats -- Design and construction Remove constraint Subject: Electric rheostats -- Design and construction Advisor Spee, Rene Remove constraint Advisor: Spee, Rene

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  • A low cost AC motor drive for battery powered applications

    Creator:
    Wiley, Brian
    Abstract:
    Environmental concerns have renewed the interest in electric vehicles. To gain widespread use, electric vehicles will also have to offer good performance and be reasonably priced. AC drive systems using modern semiconductors can provide efficient operation at the required power levels, but their cost at present is still too high....
    Resource Type:
    Masters Thesis
    Full Text:
    vehicles. To gain widespread use, electric vehicles will also have to offer good performance and be

  • Characterization studies and industrial control development for the brushless doubly-fed machine

    Creator:
    Koch, Brian
    Abstract:
    This thesis presents the development of a supervisory controller for a pre-commercial Brushless Doubly-Fed Machine (BDFM) drive system. In addition, characterizations of new diecast rotors for the BDFM are presented. Using the characterization results from the new rotors, a control scheme was developed to allow a BDFM to be packaged...
    Resource Type:
    Masters Thesis
    Full Text:
    more effective stator and rotor design was then developed by Creedy [6] for this system. The idea of

  • Design and development of a controller for a brushless doubly-fed automotive alternator system

    Creator:
    Javadekar, Virendra S.
    Abstract:
    The loads on the electrical systems of automobiles are projected to increase significantly in the near future. This will result in a requirement for improved efficiency over the present-day car alternators. An alternative scheme proposed at Oregon State University employs a Brushless Doubly-Fed Machine (BDFM) as an alternator. This thesis...
    Resource Type:
    Masters Thesis
    Full Text:
    Design and development of a controller for a brushless

  • Design studies relating to the brushless doubly-fed automotive alternator

    Creator:
    Ravi, D. K.
    Abstract:
    The alternators in today's automobiles are of the claw-pole or Lundell construction, which is a readily manufactured, low-cost derivative of the conventional rotating dc field synchronous generator. The efficiency of the Lundell system is low due to a complicated magnetic circuit of predominantly solid steel and a high windage rotor...
    Resource Type:
    Masters Thesis
    Full Text:
    Electrical and Computer Engineering presented on June 8, 1992. Title : Design Studies Relating to the Brush

  • Direct torque control for brushless doubly-fed machines

    Creator:
    Brassfield, William R.
    Abstract:
    The Brushless Doubly-Fed Machine (BDFM) has recently become an important research topic in the field of variable-speed AC drives. In recent studies, the BDFM has shown significant potential for improving the reliability and performance of AC drive systems, as well as reducing total system cost. While the BDFM offers several...
    Resource Type:
    Masters Thesis
    Full Text:
    the sake of fairness and completeness. First, the stator and rotor design for the BDFM are more

  • Finite element based rotor design optimization for the brushless doubly-fed machine

    Creator:
    Salim, Mohamed Ali, 1968-
    Abstract:
    Brushless Doubly-Fed Machines have potential benefits in variable speed generation and adjustable speed drive applications by combining a robust machine structure with a reduced power converter rating. While recent work has demonstrated feasibility, steady-state performance has not been optimized. The nature of doubly-fed operation causes rotor currents of varying, relatively...
    Resource Type:
    Masters Thesis
    Full Text:
    consisting of Bonneville Power Administration, Puget Sound Power and Light, and Electric Power Research

  • Hardware design and protection issues in an AC/AC converter

    Creator:
    Faveluke, Alex
    Abstract:
    An AC/AC converter has been designed and implemented for the purpose of providing a modular drive system with a Brushless Doubly-Fed Machine (BDFM.) This converter is to be used in laboratory testing and also as part of a demonstration system in the field. All hardware needed to start and run...
    Resource Type:
    Masters Thesis
    Full Text:
    Hardware design and protection issues in an AC/AC converter

  • System optimization studies related to stator design and AC/AC converter selection for brushless doubly-fed machines

    Creator:
    Bhowmik, Shibashis
    Abstract:
    The advent of superior power semiconductor devices and converter topologies has renewed interest in ac drive systems. Although considerable research efforts have gone into improving power electronic converter devices and topologies, very little has been reported on the overall performance optimization of induction machine drive systems. The report of the...
    Resource Type:
    Masters Thesis
    Full Text:
    System optimization studies related to stator design and

  • The development of commercially viable brushless doubly-fed machines

    Creator:
    Bellagh, Robert L.
    Abstract:
    Basic operation, as well as successful development, of the Brush less Doubly-fed Machine (BDFM) has been documented, and research has turned from proof of concept and early development to the more practical direction of increased manufacturability to prove industrial viability. Previous research centered on using standard induction motor stators along...
    Resource Type:
    Masters Thesis
    Full Text:
    evaluation of the desired specifications to design, simulation, construction, and finally to testing. Using